- affinis)
Ptychagnostus aculeatus Ptychagnostus akanthodes Ptychagnostus atavus Ptychagnostus c****is
Ptychagnostus ciceroides Ptychagnostus cuy**** Ptychagnostus...
-
punctuosus and
affinis within Ptychagnostus, but
preferred to
place the
closely related atavus within Acidusus. "
Ptychagnostus atavus".
Paleobiology Database...
-
Ptychagnostus atavus (=
Acidusus atavus) -
ptychagnostid agnostid Ptychagnostus germ****
Ptychagnostus gibbus Ptychagnostus intermedius Ptychagnostus...
- 1935 by the ****anese
paleontologist Teiichi Kobayashi as
Agnostus (
Ptychagnostus?) orientalis. However, Kobayashi's
holotype consisted only of a badly...
- tissue, and is
slightly younger than the
Burgess Shale,
falling in the
Ptychagnostus praecurrens trilobite zone. Moon,
Caron &
Moysiuk (2023) considered...
-
Itagnostus elkedrensis occurs in the
Middle Cambrian of
Australia (
Ptychagnostus praecurrens-zone,
Xystridura templetonensis-zone, and Dinesus-stage...
-
Middle Cambrian of
Australia (
Ptychagnostus punctuosus-zone,
Quita Formation,
Northern Territories) and
Sweden (
Ptychagnostus punctuosus-zone, Andrarum,...
-
species was also
originally considered as the type
species of the
genus Ptychagnostus,
established by the
German paleontologist Otto
Jaekel in his
paper Über...
- the
Drumian Stage,
marked by the
first appearance of the
trilobite Ptychagnostus atavus around 504.5
million years ago. The 'golden spike' that formally...
- Guzhangian. The base is
defined as the
first appearance of the
trilobite Ptychagnostus atavus around 504.5
million years ago. The top is
defined as the first...
